def read_header(path):
from mrcfile.mrcinterpreter import MrcInterpreter
mi = MrcInterpreter()
mi._iostream = open(path, 'rb')
mi._read_header()
mi._iostream.close()
return mi.header
def test_permissive_read_mode_with_file_too_small(self):
stream = io.BytesIO()
mrc = MrcInterpreter()
mrc._iostream = stream
mrc._create_default_attributes()
mrc.set_data(np.arange(12, dtype=np.int16).reshape(1, 3, 4))
mrc.close()
stream.seek(-1, io.SEEK_CUR)
stream.truncate()
stream.seek(0)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
MrcInterpreter(iostream=stream, permissive=True)
assert len(w) == 1
assert ("Expected 24 bytes in data block but could only read 23"
in str(w[0].message))